Add worktree list subcommand

worktree/_worktree

@@ -28,6 +28,8 @@ _worktree() {
     (cmd)
       local commands; commands=(
         'add:Create a worktree for a branch'
+        'list:List managed worktrees'
+        'ls:List managed worktrees'
         'remove:Remove a worktree by branch'
         'rm:Remove a worktree by branch'
       )

worktree/worktree.plugin.zsh

@@ -1,9 +1,9 @@
 worktree() {
   if [[ "$1" == "" ]]; then
-    echo "usage: worktree {add,remove} <branch>"
+    echo "usage: worktree {add,list,remove} [<branch>]"
     return 1
   elif [[ "$1" == "-h" ]] || [[ "$1" == "--help" ]]; then
-    echo "usage: worktree {add,remove} <branch>
+    echo "usage: worktree {add,list,remove} [<branch>]
 
 Manage git worktrees by branch name."
     return 0
@@ -12,11 +12,6 @@ Manage git worktrees by branch name."
   local cmd=$1
   local branch=$2
 
-  if [[ -z "$branch" ]]; then
-    print -P "%F{red}error:%f missing <branch> argument"
-    return 1
-  fi
-
   if ! git rev-parse --git-dir &>/dev/null; then
     print -P "%F{red}error:%f not a git repository"
     return 1
@@ -31,6 +26,10 @@ Manage git worktrees by branch name."
 
   case $cmd in
     add)
+      if [[ -z "$branch" ]]; then
+        print -P "%F{red}error:%f missing <branch> argument"
+        return 1
+      fi
       local root=$(git rev-parse --show-toplevel)
       local wt_dest=${root:h}/${root:t}@${branch}
       if ! git show-ref --verify --quiet refs/heads/"$branch" && \
@@ -45,7 +44,19 @@ Manage git worktrees by branch name."
         _autoenv_authorized $wt_dest/.exit yes
       fi
       ;;
+    list|ls)
+      local root=$(git rev-parse --show-toplevel)
+      local prefix="${root:h}/${root:t}@"
+      git worktree list --porcelain | awk -v prefix="$prefix" '
+        /^worktree /{ sub(/^worktree /, ""); p=$0 }
+        /^branch refs\/heads\//{ if(index(p, prefix)==1) { sub(/^branch refs\/heads\//, ""); print } }
+      '
+      ;;
     rm|remove)
+      if [[ -z "$branch" ]]; then
+        print -P "%F{red}error:%f missing <branch> argument"
+        return 1
+      fi
       local wt_path
       wt_path=$(git worktree list --porcelain | awk -v b="$branch" \
         '/^worktree /{ sub(/^worktree /, ""); p=$0 } /^branch refs\/heads\//{ sub(/^branch refs\/heads\//, ""); if($0==b) print p }')